542 



2. Microdeutopus danmoniensis, (Sp. Bate). 



(PI. 192, fig. 1). 



Lembos danmoniensis, Sp. Bate, Brit. Ass. Rpp. 1855, p. 68. 



Syn: Microdeutopus gryllotalpa, Sp. Bate (not Costa). 



Very like the preceding species, as to the outer appearance, but o 

 smaller size. Cephalon nearly as long as the first 2 segments of mesosomf 

 combined, lateral corners rather produced, and somewhat obliquely deflexed. 

 Coxal plates nearly as in M. anomalus. Last pair of epimeral plates of 

 metasome scarcely at all produced at the lateral corners. Eyes rounded oval, 

 and a little larger than in the said species. Superior antennae somewhat 

 exceeding half the length of the body, peduncle as in M. anomalus, flagelluni 

 but little longer than the peduncle, and composed of about 16 articulations 

 accessory appendage comparatively small, scarcely longer than the last 

 peduncxilar joint, and biarticulate. Inferior antennae scarcely differing in 

 structtire from those in tlie preceding species. Anterior gnathopoda in female 

 somewhat less slender than in M. anomalus, and having the propodos consider 

 ably longer than the carpus; those iii male somewhat resembling the sam-' 

 legs in the male of M. anomalus^ but having the carpal projection shorter 

 with the secondary tooth removed from its base, and the propodos less deeply 

 excavated below. Posterior gnathopoda in the 2 sexes scarcely differing fro \ 

 those in the j)receding .species. Last pair of pereiopoda less elongate , 

 scarcely exceeding half the length of the body. Uropoda and telson of tl e 

 usual structure. Body whitish mottled with dark Ijrown. Length of adn.t 

 male scarcely exceeding 5 mm. 



Remarks. — The validity of this species might perhaps be questioned, 

 since it comes so very near to the preceding form, its distinguishing charac- 

 teristics appearing merely as signs of imjierfect development. Having, however, 

 collected niimerous specimens, both males and females, the latter with fully 

 developed incubatory pouch, and having found all the specimens to agree 

 exactly in the characteristics mentioned above, I am induced to regard this 

 form as in fact specifically distinct. It is only quite recently, after th( 

 plate was printed, that I have become aware of the identity of this torn 

 with the species described by Sp. Bate as M. gryllotalpa, and formerly recordet 

 by the same author as Lembos danmoniensis. In the plate, therefore, it i 

 noted as a new species, with the name 31. propinqvus. In addition to it 

 greatly inferior size, it may be distinguished from the preceding species by th 



