The Caecidae from BIOMAGLO Expedition in the Mayotte-Glorieuses area (Mollusca, Gastropoda) Author Vannozzi, Angelo Via M. L. Longo, 8 I- 00151 Rome (Italy) ang.vannozzi@gmail.com text Zoosystema 2023 2023-07-17 45 12 421 434 journal article 57502 10.5252/zoosystema2023v45a12 b7f73008-86e8-41d2-9437-c2194fb44cc7 1638-9387 8177458 5EB87A24-068B-40F3-B76B-79E4F48C478A Strebloceras oliverioi Vannozzi, 2019 ( Fig. 6 A-D) Strebloceras oliverioi Vannozzi, 2019c: 148 , fig. 1a-d. Strebloceras sp. A Vannozzi, 2016: 118 , fig. 3G-M. TYPE MATERIAL . — Holotype . Yemen • dd; offshore Yemen ; 14°47’12”N , 42°33’22”E ; 76 m depth ; MZUB 60080 . Paratype . Sudan • 1 dd; Sha’ab Rumi ; 60 m depth ; SCUBA, 3.II.1992 ; MCZR . TYPE LOCALITY . — Southern Red Sea, offshore Yemen , 14°47’12”N , 42°33’22”E , 76 m depth. MATERIAL EXAMINED . — Mayotte • 1 dd; Mozambique Channel , NW Mayotte , BIOMAGLO Stn DW4848; 12°35’S , 44°55’E ; 399- 402 m depth; 30.I.2017 ; MNHN-IM-2022-17519 . DISTRIBUTION . — Known from southern Red Sea and Mayotte ( Vannozzi 2019c ). DIAGNOSIS . — Shell of average size for the genus. Protoconch low trochospiral, broad, of about 2.25 whorls. Sinusigera notch very shallow. Teleoconch tubular, twisted, with circular cross section. Teleoconch initially tapering, then slowly growing until the aperture. Sculpture of irregular collabral ribs. Aperture simple. Length 2 mm . FIG . 6. — Strebloceras oliverioi Vannozzi, 2019 from Stn DW4848, MNHN-IM-2022-17519: A -C , different views of the specimen; D , protoconch. Arrow marks protoconch/teleoconch transition. Scale bar: A-C, 1 mm; D, 100 µm. TABLE 2. — List of Caecidae from BIOMAGLO Exp. divided by sampling site. Numbers refer to station code as DW +number, as referred in Table 1.

Station DW	4789	4800	4801	4807	4808	4814	4818	4820	4826	4836	4841	4842	4843	4846	4847	4848	4851	4853	4854	4860	4864	4869	4871
C. biomaglo n. sp.	•	•	•
C. cooki Pizzini & Raines, 2011	•	•	•	•	•	•	•	•	•
C. egenum Vannozzi, 2017	•
C. hyalinum Vannozzi, 2022	•
C. iricolor n. sp.	•	•	•	•	•
C. cf. mauritianum de Folin, 1868	•
C. sepimentum de Folin, 1868	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•	•
C. succineum de Folin, 1880	•	•	•	•
Caecum sp.	•
M. kajiyamai ( Habe, 1963 )	•
M. sandwichense ( de Folin, 1881 )	•
S. oliverioi Vannozzi, 2019	•

REMARKS A single specimen was found in the examined material. Apart from the chipped aperture, the shell is otherwise perfect and agrees well with the type material, although the tube is slightly broader. This is the third known specimen of this species and this finding extends its distribution beyond the Red Sea .