Zoological Society, 309 



wants the extensible dewlap, the bristly tail, pedunculated warts or 

 branching cirri, which characterize other groups of Monacanthi. 

 Aleuteres maculosus (Nob.). Speckled Leather Jacket . Al. re- 

 tro-scaber, sub-ovalis, ventre prominulo ; angulis quatuor aculei 

 dorsalis spiniferis ; pinnd caudal rotundatd, sub finem nigro fasci- 

 atd ; corpore colore murino ? nebuloso-guttato. 

 Radii.— P. 11, aut 12; D. 2-34; A. 32; C. 12. 

 This is a small Aleuteres, seldom exceeding five inches in length, 

 and having a sub-oval form, the back being less arched than the 

 belly. The dorsal and anal fins are arched, the curvature being 

 more abrupt anteriorly. The dorsal spine is four-sided, with rows 

 of prickles pointing downwards on each of the angles. The minute 

 second spine is very slender. As has been remarked by Salvian, this 

 small spine aids like a trigger in fixing the large one in any required 

 position. The colour of the fish after being kept in spirits is dull 

 olive-brown or mouse-colour, with scattered clusters of small dark 

 spots. The subterminal black band on the caudal fin is very faint, 

 Aleuteres paragaudatus (Nob.). Trim Leather Jacket. AL, 

 retro-scaber ; dorso depresso ex ore usque ad pinnam secundam 

 fere recto ; ventre regulariter arcuato ; pinnd caudce rotundatd, 

 sub finem nigro-fasciatd ; colore corporis murino ; fascid pallidd 

 ffiavd) e mento per pinnam pectoralem medio in latere tractd, sub 

 qud lined cwruled ; lined alterd cceruled e mento per oculum et ul- 

 tra extensd-, corpore subtus et postice cceruleis guttis pulchre in- 

 terstincto. 

 Radii:— P. 12 ; D. 2-34; A. 32; C. 12. 



This handsome Aleuteres is named in allusion to the striped upper 

 vestments of the Roman ladies. Like the preceding, it is a small- 

 sized fish. One of our specimens had the gut and the whole abdo- 

 men distended by a large Idotea, full of roe, not at all crushed, and 

 apparently little digested : a portion of its tail fin protruded at the 

 anus of the Aleuteres. 



The Aleuteres Ayraud of Shark Bay (Quoy et Gaimard) differs 

 from this and the preceding species in the dorsal spine having only 

 two rows of prickles, and in the dorsal fin having a concave outline, 

 and reaching to the caudal fin. It is also differently striped, and no 

 spots are mentioned. The Aleuteres spilomelanurus taken by the 

 same naturalists at Port Jackson resembles the Port Arthur fish in the 

 form of the dorsal spine and shape of the three vertical fins, but the 

 numbers of the rays in the dorsal and anal are different ; there are 

 no spots on the body, and merely a single dark line extending from 

 the angle of the mouth along the higher part of the sides. In both 

 the Port Arthur Aleuteres the minute prickles of the skin, when ex- 

 amined by a good microscope, appear to be solitary, and to spring 

 from a globular base. 



Callorhynchus Tasmanius (Nob.). Tasmanian Callorhynchus. 



Call., pinnis pectoralibus ad ventrales haud attingentibus ; pinnd 



dorsi secundd pone ventrales incipienti, ante lobum anteriorem in- 



feriorem pinnce caudce desinenti. 



This species agrees with the Callorhynchus Smythi of Benne 



