244 DR. A. Gt^NTHER ON A NEW ["^pr- 1> 



Plate XVII. 



Fig. 1. Left lateral view of skull and mandible of a specimen of Hdoderma 

 smpcctum, the latter disarticulated ; life-size from the specimen (adult). 

 vix., maxillary; ^«?ja?., preraaxillary; sinx., septomaxillary ; oL, co- 

 ossified dermal tubercles ; prf., prefrontal ; ./>., frontal ; prf., post- 

 frontal ; y., jugal;^a., parietal; co., columella ; ^Jno., prootic ; sq., 

 squamosal ; pi., pterygoid ; rz., vestige or rudiment of zygomatic 

 arch; q., quadrate; d., dentary ; com., complementare ; cor., coron- 

 oideum ; ar., articulare ; an., angulare. 



2. Superior view of the right ramus of the mandible of H. suspectum. 



op., operculare. Other letters as in Fig. 1. 



3. Mesial asjject of the right ramus of the mandible of H. suspectum. 



Letters as in Fig. 1. 



4. Superior aspect of the skull of H. mispectum, the mandible removed. 



I., lacrymal ; Lc.,lacrymal canal ; so., supraoccipital. Other lett«rs a.s 

 in Fig. 1. 



5. Superior aspect of the skull of H. horridum, mandible removed. (After 



Bocourt.) Lettering as in Fig. 1. 



6. Ventral aspect of the skull of H. suspectum, mandible removed ; life 



size. tt., teeth ; v., vomer ; pL, palatine ; tr., transpalatine (os 

 tranversum) ; bs., basisphenoid ; htp., basipterygoid process ; eo., 

 exoccipital ; bo., basioccipital. Other letters as in Fig. 1. 



• Plate XVIII. 



Fig. 1. Dorsal aspect of the right pelvic limb of a specimen of H. suspectum, 

 natural size, f., femur; p., patella; ;"., tibia; fb., fibula; tfe., tibio- 

 fibulare ; tr., distal tarsalia ; e., epiphysis on proximal extremity of 

 metatarsal of the second toe. 



2. Ventral aspect of right humerus of a specimen of H. suspectum, natural 



size, h., humerus. 



3. Dorsal aspect of the antibraohium, carpus, and manus of the right 



pectoral limb of H. suspectum, natural size, ul., ulna ; rd., radius ; 

 ue., ulnare; re., radiale;p., pisiforme ; c, centrale ; cp., distal carpalia. 



4. Direct dorsal view of the pelvis and saci'um of H. suspectum, natural 



size, pb., pubis ; of., foramen for the passage of the obturator nerve ; 

 it., ilium ; f.cr., foramen eordiforme ; p.ji., pectineal process ; is., 

 ischium; sv^ and sv'-, the two vertebrro that go to form the sacrum, 

 tlie first and second respectively. 



5. Ventral aspect of the sterniun and shoulder-girdle and associated parts 



of H. suspectum, natural size, s., scapula; cl., clavicle ; co., coracoid ; 

 ic'., interclavicle ; st., sternum ; c.rb., costal ribs. 



6. Ventral aspect of the hyoid arches of H. suspectum, somewhat enlarged. 



b.hy., basihyal ; axv., anterior eornua ; p.co., posterior cornua. 



2. Description of a new Species of Deep-sea Fish from tlie 

 Cape {Lophotes fiski). By Dr. A. C. L. Gijnther, 

 RR.S. 



[Received March 14, 1890.] 



(Plates XIX. & XX.) 



The Rev. G. H. R. Fisk, C.M.Z.S., has kindly submitted to my 

 examination a highly interesting fish which proves to be a species of 

 Lophotes, a genus still extremely rare in collections. In a letter 

 addressed to our Secretary under date of September 9, 1889, Mr. Fisk 

 says: — "Enclosed you will find a rough sketch of a fish which 



