EULOPHOCERATID. 85 
not practicable to say that these species are identical, as supposed by 
Gerhardt. The drawings certainly differ materially. The sutures are 
more like those of Paralenticeras than those of any other genus that I 
know. The siphonal saddle is very large, the first lateral saddle has three 
long arms, the outer one the shortest and the inner one the longest. The 
first lateral lobe is narrow and trifid with long bifid arms. The outer lobes 
are narrow also, whereas the saddles are very broad and solid and have 
short rounded marginals. 
The volutions are depressed, helmet shaped in section, and very broad, 
without keels, but have smooth shells with broad fold-like knobs on the 
umbilical shoulders. 
PARALENTICERAS Hyatt. 
This is a highly compressed involute smooth shell with sutures unlike 
those of any other known genus except Lenticeras. Although so compressed 
and smooth that it resembles Platylenticeras, it is obviously a member of the 
same genetic series as Lenticeras. The excessively elongated and club- 
shaped marginals also indicate affinity for Hulophoceras. 
The genus was mentioned in Zittel’s Text-book, Cephalopoda, page 
590, and placed in its proper relationship to Lenticeras. 
The sutures have the same broad first lateral saddle with three arms, 
the shortest next the venter, as in Lenticeras, and similar second and. third 
laterals. All the outlines are also of the general outline according to 
Gerhardt’s figures. 
I fail to recognize any special resemblances to the sutures of Ammon- 
ites clypeiformis VOrb., which has a type of suture found in Coilopoceras 
and its allies. 
Only one species is known to me, P. (Amaltheus) sieversi Gerhardt.” 
EKULOPHOCERAS’ n. gen. Hyatt. 
This genus is proposed for shells similar to Platylenticeras, but the 
sutures obviously have only two principal laterals, derived from the primi- 
tive first lateral saddle, and cnly a few broad auxiliary saddles, the inner 
most being extremely broad. 
Only one species is positively known at present to be in this genus. 
a Neues Jahrbuch fiir Min., Geol., und Pal., Beil.-Bd. XI, 1897-98, p. 79, pl. 1, fig. 5. 
bEbAo@os, handsome crest. 
