240 OSTEOLOGY OF SIMENCHELYID^ GILL. 



nets at the Azoie Islands at depths varying from 844 to 2,000 meters 

 by the yacht HirondeUe, under the auspices of the Prince of Monaco.* 

 These were subsequently determined to belong to a peculiar form called 

 by Dr. Kobert Collett GoncJiognathus Qrimaldii. A comparison of the 

 description given indicates plainly that the sujiposed new generic type 

 is identical with Shnenchelys. It has the same scaly skin, short trun- 

 cated head, small mouth, acrodout teeth, inferior branchial slits, and 

 large ''conchiform" lower jaw, reference to which is conveyed in the 

 generic name, t 



SIMENCHELYID^. 

 Synonyms as family names. 



=Slmenchelyid£P Gill, (with Goode & Bean), Ball. Essex Inst., v. 11, p. 27, 1879. 



=Sin]cnchelyid;o Gill, Standard Nat. Hist., v. 3, p. 107, 1885. 



=Simenclielyidte Jordan, An. Rep. Com. Fish, for 1885, v. 13, p. 844, (Sep., p. 56, 1885) 



1887. 

 =AuguillidaB s. f. Jordan ij- Gilbert, 1882. 

 =Murienida) gen. GUnther, Collett. 



Synonym as snhfamily name. 



=Simeucbelyina3 Jordan <.f Gilbert, Syn. Fishes N. Am., p. 357, 1882. 



Diagnosis. 



Apodal fishes with a blunt snout, transverse anterior mouth, massive 

 jaws with an acrodont <lentition, and inferior longitudinal branchial 

 slits moderately far apart from each other. 



Description. 



Body stoutly anguilliform, moderately compressed anteriorly, much 

 compressed towards end of tail, and with the anus little in advance of 

 the middle of the total length. 



Scales small, linear, arranged in small groups obliquely and at right 

 angles to those of the neighboring groups, well embedded in the skin. 



Lateral line distinct, quite high uj), and on each side of the back in 

 front, but gradually declining and near the middle behind. 



Head small, compressed, ovate laterally, obtuse in front, with all the 

 bones invested in the skin. 



Uyes about or within the anterior third of the head's length, entirely 

 lateral, small, and covered by thin skin. 



Nostrils lateral ; the posterior close in front of the eye, the anterior on 

 the front of the snout and subtubular. 



*Nombrenx exemples toiijours piis dans les uasses an largo des lies de Graciosa, 

 Fayal, San Jorge, Pico, Floras, et Corro, Agores, .Juillet et Aoflt, 1888. Profoudeur : 

 844™ k 2,000™. Op. cit., p. 124. 



t Diagnoses dos poissons nouveanx provenant des campagnes de I'Hirondelle par 

 Robert Collett <^I?nll. Soc. Zool. de Franco pour 1889, pp. 122-125 (1. — Snr nn genre 

 do la faniille des MHrn'iiidw, pp. 123-125). 



